Office Complex (4.3)/_
 
The Office Complex is practically a series of interlocking clerical rooms with
basic computers and nice diplomas hanging on the wall. Its close, traditional
design will provide for some nasty scenery, and lots of navigation to do.
Start off by looking to your left, and you'll notice how the electricity is
zapping aliens that cross a certain line. Shoot the vent cover next to the
electricity, and quickly crawl through. Crawl left, and take the ammo by
carefully navigating yourself under the ventilation fan. Head back, and take
the right route. Jump into the room, but watch for the rope eaters. Go right,
and hit the switch in the small room to turn off the power to this location.
Leave the scientist alone as he will not go with you. Head through the two
metal doors, and run past the electric area. Since the power is off, they will
not be shocking anyone, anymore. Smash the upcoming window, then leap through.
Jump through the broken window to your right, but DO NOT touch the water.
You'll notice an electric cord is electrifying the water in this room. Make
your way across the room by jumping onto non-wet surfaces, then hit the light
switch to turn off the power to this room. The water will be safe now.

Jump into the water, and smash the vent cover along the wall. Crawl through.
Eventually, you'll fall down as some ceiling tiles lose their support. Open
the two red doors, then go to the storage door. An alien will chop away at the
wooden door. Lure him to break down the rest of the door, then kill him. Go in
the room to find some glock ammo. Smash through the cargo boxes in the
upcoming area, and grab the shotgun you'll find. Kill the nearby alien, and
the security guard will open the gate for you. The area below this has some
health and ammo in wooden crates. Go through the hallway where the guard just
opened the gate. You will find some ammunition in this back room. Head back to
the area with the storage door, but now look for an area with two LOCKED red
doors. Push two nearby crates to the ceiling hole, and then use the boxes to
boost up there. Jump up to the ladder, and climb above. Destroy the vent cover
to your left, and then jump down.

A scientist will run out to greet you, but suddenly, an automated turret will
pop out, and kill him. Duck behind the wooden crate for protection. Use your
pistol and keep shooting the turret till it dies. Make your way to an area
underneath where the turret was, and hit the switch to open a door. Go in the
small side door to your left for ammunition, and some powerups. Now, go in the
main hall where the scientist came from, and climb the stairs. Another turret
will pop up behind you, so keep aware, and take that out too. Watch for some
headcrabs up above as well. Go through the door, and then another door on your
left. You will find some power pods. Go ahead, and there will be a ton of ray-
shooting enemies. These guys are fairly new, and will launch powerful laser
attacks after charging up. Aim for their eyes, and take them out with your
useful shotgun. There are about 15 mixed in this interloping area of office
subrooms. Go right, clear out most of the rooms for additional powerups. Go
back to the mid left area, and then head upstairs.

   *A scientist will inform you that government soldiers have arrived to save
    everyone from the horrors that have presented themselves.*

Use your pistol on the turret above and continue ahead. Open the door, and
you'll find some grenades in the room below. Some ray shooters will spawn
after you visit this room though. Head back up, and have the nearby ally
follow you. Go into the office ahead, and blast away the wood in the doorway.
Watch for the headcrabs that fall from above in the lunch room. Go into this
dark doorway to reach a new and brightful area. Hit the wall lever to enter
the cooler. Go along the right paths in the cooler, and clear out the aliens
as you go. You'll eventually reach a room before the last one. Look for a
bright red switch at the far end of the room, and hit it. You should see a
conveyor platform to start scrolling back and forth. Now, head back to the
first room, and climb to the top of the shelf. Go through the nearby vent, and
continue going through the vents up ahead. You'll reach an area where you need
to cross via the moving platform. Shoot the boxes on it to free up some space,
then time your crawling motion across. Crawl through the series of vents, and
crawl left through a series of vents.

Jump out, shoot the aliens, then climb more stairs. Go left up top, and a
scientist will leap through a solid window. Go in this room for some ammo.
Continue up ahead to the elevator shaft. You'll hear a scientist screaming for
help as he dangles above. Climb up the series of ladders, however, he will
soon fall and plummet to the darkness below. Once you reach the top of the
elevator, shoot the vent cover on it to open up a small hole. Jump down below,
then open the elevator door to reach the next area.

 _________________________
/We've Got Hostiles (4.4)/
-=-=-=-=-=-=-=-=-=-=-=-=-=-=

You will now be at a high security storage facility. Go right, and you'll note
that an innocent guard will get dragged into a vent. Look near the red open
door for a button on the wall. Smash the glass to sound off an alarm and seal
the area. Quickly run through this before it closes, and go ahead. You're
going to face a lot of standing turrets up ahead, so get ready. Destroy them
using a shotgun or Glock from a hefty distance. Look in the lower right
portion of the room for an MP5 off of a soldier's body. Go through the next
hallway and break the glass to sound off the alarm again. Jump over the
upcoming two lasers, and watch for 3 ray-shooting aliens. Head to Storage Area
1. Take down the turret around the corner. But avoid the red lasers that are
popping out of the wall. These devices are actually sensor lasers that will
activate turrets in the vicinity. Do NOT shoot these turrets, or you will
activate them. You can actually sneak by them if you don't touch any lasers,
or shoot at any of the machines.

Watch for some ray-shooters to spawn behind you after you enter the room. Leap
onto the green crates, and boost yourself to the other side. Jump down, and
destroy the two turrets, then move ahead. Break the glass, run through the
lasers, jump over the next series of boxes, then continue ahead. Repeat the
last process from before. Jump on the nearby crates, and watch out for the
trip mines. Climb the ladder, and you should now be on a tall catwalk leading
to a new area. Enter around the corner, and you will see a Black Mesa
scientist run to the rescue of the government soldier. Unfortunately, the
soldier blasts away the scientist with no remorse. Quickly go down and kill
the soldier. All of the government forces are equipped with MP5's.

Hit the button on the wall, and then board the elevator to go up. You will
find 4 soldiers in this room, so be careful. Note that they will toss grenades
if they have an idea of your position, but cannot see you. Check the wooden
boxes for health, ammo, and power units. Now, go upstairs and proceed through
the next doorway. Break the next glass alarm, and go past the rope creatures
on the walkway. You should now be at a T-split. Go right, and run back through
a conveyor belt. Climb some boxes to reach the next upper belt, and run
through that one too. Cross the mini-bridge, and take out the lone soldier
behind some sandbags. Now, drop down past all of the red lasers, and sound the
alarm for the next door. In the next room, two panicking scientists will run
to 5 soldiers, who slaughter them mercifully. Kill the 5 soldiers, then make
your way up the room. Along the way you will find ammo and health.

Cross another catwalk up above, while avoiding the rope eaters. There will be
5 more soldiers in the next room, and be cautious as some are hidden behind
boxes. Grenades will be very troublesome in this room. Drop down, and hit the
button to initiate an elevator to come down. Take it up, and you should hear a
military chopper in the background. There will be a few more soldiers around
the corner in the open. You have finally been able to see what the outside
surface of the facility looks like. Unfortunately, the area is locked down by
government forces. Make your way to a center bunker that has a ladder going
down. Climb down, and go left to re-equip. Enter the ventilation access, then
go through the next door. If you look above, the chopper will destroy the roof
to the vent access area. Move back, wait for the debris to fall, then jump
out. Slowly make your way to the bottom, jumping from ledge to ledge without
taking any major fall damage. Be careful though as two soldiers will rappel
their way down in the opened roof. Go in the vent at the lowest level. Jump to
your left, then climb down. Go take the bottom vent, and you will be in a new
room. Take the middle vent to reach the control room from before.

   *The nearby scientist will inform you that the government's plan for fixing
    the problem is to eradicate all links to the Black Mesa facility. Thus, the
    soldiers are your hostiles as well as the aliens. He says the only way to
    fix this problem is to make your way to the Lambda Labs, where hopefully
    the scientists can figure out a solution to the problem. You can reach the
    area by taking a decommissioned railway under the facility which leads to
    the labs.*

Hit the button on the control console to gain silo access in the facility, and
go through the newly-opened large door.

 ________________
/Blast Pit (4.5)/
-=-=-=-=-=-=-=-=-=-=-=-=-=-=

Start off by smashing the wood to your left, and entering the new room. You'll
now be in the control console. Kill the alien to your right, and hit the
lever. An elevator should rise. Board it, then hit the button to go down. You
will now be in a large railway. Board the mini-cart, and press the use button
to turn it on. Press up to increase your speed. You can squish some of the
aliens easily. When you reach a large red horizontal beam, jump out of the
cart as you are reaching a danger zone. Go back to the cart, and use it for a
boost to reach the walkway on the right. Go under the pipes to the other side,
then climb up the ladder. Jump into the pipe, and plop out on the other side.
Leap to the other elevated pipe, and then jump to the solid nearby balcony. Re-
equip via the nearby powerups. In the next room, run across the pipe and onto
the elevator. Go up, and destroy the 4 shockwave creatures ahead. On the
railing, go right, and you will come across more aliens. Cross the center, and
hit a lever for the next door. You will start to hear a large banging. I'm
going to refer this area as the CORE.

Make your way ahead until you are in a small control room. Suddenly, a large
tentacle arm will smash through the glass, and kill a scientist who tried to
reach for a test fire button. This creature acts as a mini-boss for the most
part, as he can only be destroyed by launching the test engine rocket to
incinerate him. The creature has 3 arms, which move around the core, and keep
banging at various locations. The creature has no eyes, but reacts to sound.
Thus, you have to crawl or walk in this area to get by undetected. It easily
gets distracted by sounds. So tossing a grenade on an opposite wall is great
for reaching an area without taking damage. You may also shoot one of the arms
to cause it to lower temporarily for about 5 seconds. This is great if you're
about to enter a ladder or doorway, and don't want to get hit. Anyhow, make
your way up ahead, you should be on the very top of the core. Distract the
creature, and make your way down to the lowest level in the core. Smash the
wooden boards covering the door with a grenade, but toss it from a distance.
Wait for the creature's attention to lower, then sprint through the door.

Before you can test fire the rocket launcher on the creature, you need to turn
on three elements - Oxygen, Fuel, and Power. We're going to start with Power.
Jump across the gap in the metal platforms, and then jump past the second
hole. Kill the 3 shockwave creatures, and move ahead. Go right, and hit the
button. Board the elevator down. However, it will short out after a brief
amount of time. Look to your left, and leap for the long ladder. Climb all the
way down to the bottom, and then jump to the solid concrete via the small pipe.

   *The scientist standing next to the control console hopes the Lambda Lab
    can fix the problem. Unfortunately, without any power, there's going to be
    problems activating the trains in the railway. His bud went down to the
    power generator, but hasn't come back in quite some time.*

Go down the hall, and jump over the toxic leakage in the hallway. Hit the
button on the platform to spin around to the other side. Jump onto the ladder
and climb up. Make your way around the outer edge to the left and right
ladders. On top are two buttons which have to be hit within several seconds of
each other to activate the power generator. You will know you've accomplished
your mission when blue electricity shoots out of the spinning generator. The
scientist on top, who was hiding, will be killed by the device, so don't worry
about him. Now that the power is activated, make your way back to the elevator
shaft, and climb the ladder. Jump up top, and make your way back to solid
ground. Now, push these small metal boxes down into the hallway right in the
narrow entrance. There should be a power generator to your right. Jump on top
of the box, then onto the generator, then crawl along the narrow elevated
wire. Make your way over the electrified water, and then drop down. Go back to
the main core.

Climb one level while avoiding the humongous creature. Go across the catwalk,
and take care of the aliens along the way. Go right, and down the ladder.
Smash the sewer grate, then climb down the long ladder. Move ahead on the
small pipe, and make a left at the T. Climb the ladder, and kill any aliens
above. Go ahead, and in the next room, make your way down to the base of the
large fan. Hit the button to start it up, then climb back up top. Jump into
the middle, and the fan is so strong that it will boost Gordon upwards. Pull
out your crowbar, and smash the wooden planks on the roof. Then, float over to
the vent cover, and smash that as well. Now, crawl through and smash the
cover. Smash more wooden beams, then crawl ahead, and smash the cover to drop
down. You will now be in the control room for the fuel and oxy of the rocket
engine. Hit the button on the console to turn on both features, then hit the
button by the sliding door to open it up. Go through the door, and make your
way back to the Core. Get to the command console by climbing all the way up
top, taking care not to make too much noise. Once you're in the room, and now
that all of the features are online, run up and tap the Test Fire button. Move
back, and watch the fireworks.

   *The rocket engine will test fire, launching three large fiery beams that
    toast and burn the giant tentacle creature to nothing more than a pulp.
    That mutation is nothing more than a burnt muffin.*

Now that it's out of the way, you can climb down to the lowest level. Note
that there's a new hole where the creature once was. Jump down this hole, and
strafe down the winding tunnels. Jump down into the large pit with water, then
swim up. Leap up into the small aclove, and check the security guard's body
for a Magnum Revolver, along with some ammo nearby. Drop back down, swim
under, and go around to the outer edge of the small concrete layering. Swim to
the surface water on the one side, and then jump to the dry ground. Move ahead
over the toxic waste. Climb down the ladder, and refill your status with the
nearby chargers. Climb back up, and jump onto the long pipeline. Use these
pipes till you reach a wall, then drop off to a side pipe, and take that all
the way to the other side. Jump to the pipe ledge, and then jump onto the
large pipe. Leap over to the small hole in the fence of the pipe entrance, and
run through. When you reach the end of the pipe, the small section will
collapse with you inside. You will lose a majority of your health. However,
jump on the table for two medpacks, and smash the boxes for ammo, more health,
and powerups. You will also discover some trip mines in the boxes too. Go
ahead to reach the next area.

 _______________
/Power Up (4.6)/
-=-=-=-=-=-=-=-=-=-=-=-=-=-=

Continue down the hall, and suddenly a large ruthless creature will slaughter
a marine. This mini-boss primarily has two different attacks. One is where he
will lift his foot then stomp down a raging red beam that goes in a line
pattern towards you. The other attack is a twin flame launcher where he'll
burn you to a crisp whenever you get fairly close. If you look in the far
diagonal corner of the room, there will be a hallway. Make your way there,
then take a left to the Track Control destination. Move ahead on the railing,
and the one end will collapse. Kill the aliens that attempt to ambush you, and
check the boxes for ammunition. Now, go down the lower hall and it should lead
back to where you were coming from (but one level down). There will be a few
headcrabs along the way. Make sure you refill your health at the charger. Some
ray shooters will spawn as well. Move dow the hall, and look for a valve. Hold
down the use button on the valve to wind it so the door is completely open. Go
through the door into the toxic pit.

Climb the ladder and rid of the soldiers above you. Grab the ammo and nades
where the one marine body is dragged into a vent. Climb again, and you will
find a soldier and a turret to deal with. Refill on your status, then go down
the hall. Move to the opening, and take out the soldier with your Magnum
Revolver. Make your way to where the explosives are, and plant two trip mines
(one on each side). Leap up on the middle ledge, and then go through the new
door. Lure the soldiers inside to follow you, then jump back across the
walkway, and watch them die from a humongous explosion thanks to the trip
mines and explosives. Go back in the new way they came from, and make a left.
Pick up the new ammo and recharge your armor. Then hit the button to cause for
the Power Generator elevator to lower. Take it down.

When you reach the bottom, some shockwave creatures will try to race towards
you and set off the mines. Take them out, then crawl out through the opening,
and fall into the water below. Climb via the ladder, and detonate the mines
from a safe distance. Now, move ahead to engage more shockwave creatures. Make
a left in the circular room, and go down the stairs. Go down for two levels
till you reach the Maintenance portion of the stairs. Go into the water-
covered floor, and watch out for the underwater leeches that peck away at your
health. Go to the far end and look at the machine. Smash the two wooden boxes
jamming it, and the machine will now start lubricating. Now, climb a flight of
stairs, and enter the new area. Go to the end, and hit the button to enable
Power Unit 1. The power will now be restored. At the same time, you will hear
a Marine's radio call in the background. Climb the stairs, and go back to the
Power elevator. It will start to lower with two soldiers. Quickly take them
out with a MP5 grenade. Use the elevator to go up, and then jump back out, and
head back to the place that puts you where the large creature was.

You will now notice that two large silver metal doors which weren't open
before, are now open. Proceed down this large tunnel, to an area with two
large shockers. Move to the end of the room, and hit the lever to turn the
main track power on. At the same time, the two shockers will connect with
shining blue beams of light. Take the hall on the right to avoid being
shocked, and head back to the open arena. Here comes the fun part. Catch the
attention of the large Cyclops, and lure him after you. Sprint back down the
large tunnel, and take the hallway on the left to avoid getting shocked. Move
to the railing with the power lever, and he SHOULD see you. He'll start
running towards you when he gets shocked and blown to pieces by the shocker.
Good work, Gordon. Now, head back to the main room, and jump on the cart under
the little inlet. Press the use key on it, and drive it forward to the center
platform. Now, go back to the room with the fallen railing, and go to where
the one door is boarded up. Smash away the wooden planks, and go inside. A
security guard will be proned on the ground nearing death. Grab his revolver
ammo, and use the medpack to restore some life. Since the train cart is on the
center platform, his the lever to cause the platform to rotate it towards the
other track. Jump through the small window, and drive the train cart ahead. It
will smash right through the concrete barrier set up to stop it. You will now
proceed to the next stage of the game.

 ________________
/On a Rail (4.7)/
-=-=-=-=-=-=-=-=-=-=-=-=-=-=

Your brief ride will shortly stop at a security gate along with a security
guard overwatching your progress.

   *The guard says that the Lambda Labs have contacted him with some new
    information. In order for the hectic problem to be resolved in any way,
    they need a special government satellite delivery object to be sent up
    and in orbit. The soldiers set up the launch site for the rocket, but
    have failed to launch it. If this satellite can get in orbit, then the
    labs might have some success in fixing this problem.*

After hearing the valiant speech, hit the nearby switch to flip the gate open.
Move ahead in your cart and watch for the rope eaters. Your cart will lower
via a mechanical elevator into a water-covered tunnel. Continue on the path
making your way around the tracks. You'll come across switches, which look
like orange-mounted objects that allow you to change the path your cart goes.
To switch to an alternate path, simply shoot the switch once, and it will flip
to a different direction. However, let's go back to the walkthrough. As you
dwindle along the path, go straight through the first switch. When you reach
the second switch, shoot it, and your cart should go straight. At the open
area, kill the poison spitter to your right, and watch for the rope eaters on
the roof. Go ahead, and another spitter will pop out on your right. Jump off
your train, and go upstairs. Destroy the small boxes blocking your path, and
hit the lever on the control panel to move the crane blocking the path. Ride
the rail straight ahead to the first switch you see, and shoot it so the
direction points to the left. Take the new path up on your cart, and you will
go on an elevator.

This is a fairly tricky part though, leap off and climb the first ladder you
see. Take out the guard standing there. Climb the next ladder to your right,
and take out the remaining guards. There will be a soldier around the corner,
and go right. Snipe the two soldiers that are exposed down the alley, then go
back, and take the left path. Nade the middle two soldiers and rid of them.
Look along the left wall for some dead alien bodies (which the marines were
fighting before). Go up the stairs, recharge your armor, then climb all the
way back down the elevator shaft. Take your cart up the elevator, and move
straight ahead. Your cart should stop at the gate. Normally, you'd have to
combat several enemies, but since you took them out before, this will be a
breeze. Jump off, hit the switch to open the gate, then move your train cart
forward.

Up ahead you will find more marines and a few planted trip mines. Shoot them
down, and continue ahead. Stop your train at the first hall to your right, and
dismount. Clear out the corner on foot, and check the middle area for ammo or
health. Go upstairs, and clear out the rooms for marines and aliens. You will
be able to find some nifty medpacks, boosters, and specific ammo along the
way.  Now, go back down to the lower lever where you first started. Move your
cart ahead, and stop at the newest area. You can tell when you see sandbags
blocking your route ahead. Immediately to your left will be 3 soldiers; take
them out in a jiffy. Board off, and take the right hall. More aliens and
marines will be battling it out, and it's best you not interfere. Let them
eliminate each other, then take out the remaining forces. Go into the first
room on the left, and look beyond the box for a security guard. Have him
follow you to lay down support fire, and check the branching off to the right.
Destroy the boxes for some power units, but be weary as some headcrabs will
fall from a vent above.

Now, go back to the main hall, and continue ahead. Around the corner is a
mounted bunker machine gun. Toss a grenade behind it to eliminate the guard,
and the threat also. Leap across the tracks, and then go through the right red
door that says Blast Area. Crawl along the small right ledge until you see a
guard below, and snipe him with the Revolver. Climb down, and go through the
next blast door. Jump onto the next cart, and ride it through. Avoid the red
lasers by crouching, otherwise, pesky turrets will be activated. Some spitters
will also try to attack you as you proceed forward. Check the door on the left
for some leftover ammo on dead bodies. When you reach a sudden spurting corner
to the left, BE CAREFUL. A mounted RPG launcher will continually fire at you.
You can duck under the shots, however, it keeps on firing in successive blows.
Pull out your Revolver, and snipe out the guard next to it, by bobbing your
head up and down as the rockets fly overhead.

Destroy the trip mines ahead, and go up the hill. There will be two soldiers
above. You can recharge your armor via a nearby booster. Hit the lever to open
the nearby gate blocking your path. Go back to the original cart you were on,
and ride it ahead. Suddenly the second cart to your left will start moving
with a guard. Take him out, then jump off your cart, and start following the
second one that went down the tunnel. You will see it in the distance stopped
at another gate. Right to the right platform where you'll see several boxes
and a MG to your left. Here comes the tricky part. There's a mounted MG to
your right, right around the corner. You're going to have to eliminate the
three soldiers hiding behind the boxes first, then pull out a grenade, and
toss it behind the MG bunker to destroy that. Pull out your grenades, and toss
one to catch attention. As the soldiers scramble, pick them off with the
Revolver. Finally, charge towards the bunker, and get close enough to it on
the lower ground so that it cannot hit you. Toss the grenade from this safe
location for a job made much easier. Once this is clear, you can go up the
stairs, and restock on ammo. Go next to the MG bunker, and hit the lever to
open the gate.

Continue ahead, and stop at the elevator. Go right, and take the right
elevator up by yourself. There are two boxes right by the entrance that have
satchel charges. Once you're at top of the elevator, you will notice that the
way is blocked by explosive boxes. Toss a satchel charge behind the boxes,
then send the elevator down. Detonate it from a safe distance, go back up, and
get off the elevator. Now, go over to the ladder, and proceed down. Kill the
lone soldier, then go up one level, and head back to your cart. Drive it
straight forward, and it should rise all the way up. Once you're at the top,
you'll notice streams of electricity shooting out. Time your way past them,
and take out the 2 trip mines around the corner. In the next area, stop your
cart at the gate, and watch out for the moving boxes. In the right corner are
two boxes. Be careful as two soldiers will pop out and try to ambush you.
Quickly nade them, and hit the lever behind their dead bodies to open the
gate. Proceed ahead on your cart.

After you make it over the hill, the next area has two side lasers. Time your
movement with the train cart so that you do not get sidewhacked by boxes. Once
you make it through, there's an RPG around the corner. Use the same tactic
from before by rushing it with the cart, crouching, and then popping up with
your Revolver. Ahead will be a High Voltage area. You will have to time your
movements so that you do not take major damage from the two moving beams. Once
you're past them both, hit the nearby switch to proceed forward. Stop the
train at the missing gap in the tracks, and go down the right ladder. At the
bottom will be a laser that crosses the ladder's path. Leap off before you
touch the laser, and go into the small room. Eliminate the two aliens, grab
the remaining ammo, and crawl out via the small window. Jump over the tracks,
and proceed ahead. Around the corner is a lone soldier and a mounted MG. Try
to nade the mounted MG from a distance, then charge the right hall, and take
out the guard around the corner. Grab the medpack, and go upstairs.

   *You will overhear a discussion between two soldiers. Apparently, you're
    believed to have sabotaged the experiment, and the sole reason these
    aliens have warped here. The men then get extremely angry as you have
    been killing their buddies left and right.*

Take out the two guards after their melodramatic speech. Continue into the
wide open area, and look into the upper left for a small ghille area. Nade it
as there is a snipe mounted up there. Grab the medpack on the box if you need
it, and continue ahead through the blast door. Go through both doors by
hitting the keypads next to them. You will then see a giant silo opening in
the ground. Around the corner to your right will be 3 soldiers. Take them out
with grenades. Move ahead into the Console Control via the lower blast door.
Go up the stairs and avoid the 3 horizontal red lasers (otherwise you will be
blown to pieces by explosives). To avoid them, crawl under the first two
lasers, stand up on the stair railing, then leap over the third one. Go
through the next door, and you will be able to overhear another discussion
between commanding soldiers. Kill them both, then enter the second room. Hit
the red button on the wall to launch the rocket.

   *In a massive event, blast doors will cover the windows, and the silo hole
    will open up. A massive rocket will be launched, which is the satellite
    test rocket the government never sent up. This is exactly what the Lambda
    Labs needed done. Now all you have to do is reach them.*

Now, head back to the open area where you took out the sniper. If you look to
your left, a large door will now be open. Proceed through, and go down the
ladder to your left. Pick up any remaining ammo, health, or powerups from the
wooden boxes. Ride the red "speed demon" train to make it to the next location.

 ___________________
/Apprehension (4.8)/
-=-=-=-=-=-=-=-=-=-=-=-=-=-=

The next area loads with Gordon riding the speed demon train with ease.
Unfortunately, you will notice that you have lost control of the cart. It will
then speed ahead, derail, go past 3 soldiers, and plummet into a giant water
tank below. Quickly swim to the surface for air. Now, swim to the bottom and
go into the hall next to the cart. Go into the left room, and swim through the
bottom hall. Some dirt will collapse through a ceiling. Catch a breath of air,
and swim back out to where your cart was. You might have to wait a bit, but
the outer frame holding the four barrels will fall apart, and allow them to
float to the surface. Swim up above, and use the barrels to boost across onto
the red hall to the right. Kill the 2 aliens, and continue up the stairs. You
are now on the other side of the water tank. Drop into the water below, and
swim down the closest hall. Catch a breath in the new room, and smash the vent
cover on the ground. Swim through it, and take the right route up into the new
room. You will be able to find some MP5 ammo and various munitions. Swim back
to the other side, and continue up ahead in the hall.

You will now be back on dry land. If you look up ahead, a scientist will be
eaten by a gigantic fish creature. Avoid the water and rope eaters. You'll
also notice that a crossbow is stationed in the middle container. Continue
ahead and climb the ladder to the upper room.

   *The scientist will inform you that he's too afraid to move out because of
    the large fish creature in the water. It was supposedly brought in a week
    ago from the depths of the ocean, but based on its size and origin, it's
    probably another freakish alien. You can try to knock it out with the
    tranquilizer crossbow in the sharkcage, but that risk is up to you.*

Seeing as there is not much else to do, move ahead and onto the narrow beam.
Drop into the cage and equip the crossbow. Suddenly, the cage will snap and
lose its grip. You'll now be sinking in the water, when you hit the bottom,
the fish creature will approach you. Shoot as many darts into it until it
dies. It usually takes 4 hits to take one down. Swim out, and catch a breath
of air. Now, swim back down, and look in the left corner for a valve. Rotate
it all the way to open the door next to it, then briefly swim through. Take
the ammo along the way, and go upstairs through the next door. You will now be
in a room with lots of rope eaters. Soem ray shooters will spawn to attempt to
interfere. Go down via the lower hall, and the next room will have 2 giant
fish in the water. One of the beginning railings fall apart, so be careful.
Try not to fall into the water, and make your way to the other side. Leap
through the hole in the fence on the right, as you can't make it past the
sparking wire.

Swim down the water and up around the corner. Go up the stairs. Climb the
ladder to reach the Generator Control room. Some poison spitters will try to
alter your path. Go down and up through the right hall. Move up to the control
console, and hit the button to cause for the pumps to start moving. Now, time
your jumps across via the moving pumps to reach the other side. Watch for the
lone headcrab that will try to ruin your jump. Go right into the yellow halls.
You can recharge your health along the way. In the next room with the computer
equipment, there are about 6 aliens total, composed of ray shooters and
headcrabs. Finish them off.

   *A scientist in a safety chamber will open the door. He will inform you that
    Black Mesa security has been tracking you ever since the incident began.
    There are all sorts of tracking devices in your Hazard Suit, and the
    government has been able to track you down as well. The area up ahead is
    very cold, and can knock you out fairly quick unless you know what you're
    doing. Stick to the older industrial areas if you want to play it safe.*

Hit the console button to open the door. Quickly sprint ahead with a MP5, and
shoot any aliens that try to stop you. Make a left in the next room, and look
for the ladder shaft in the corner of the room. Climb down it. Up ahead are
some barrels and boxes. Down the narrow hall will be a total of 4 spawning ray
shooters. The 2 other ones will spawn ahead and behind you, so be careful. At
the end of the hall, take the elevator up.

   *A security guard has an important message for you. However, before he can
    spurt it out, he'll be sniped in the back by a mysterious entity.*

Go up ahead into the large room, and you will be greeted by black-cladded
assassins. These guys (or girls for that matter) are a true pain as they have
silenced Glocks, and can do various flips. They're also agile enough to dodge
MP5 grenades while in mid-air. Try to engage them, and put them down for the
count. Go down the right hall, and curl around the corner. Go into the room
for lots of ammo, health recharges, and power units. Go back out, and finish
off the remaining 4-5 assassins. Climb the stairwell in the center of the
room, and walk up to the Surface Access lever. Hold down the use button to
pull it all the way. Once the doors are opened up, proceed through the 2 doors
into the room ahead.

   *Suddenly, the room will go dark, and you will be clobbered by several army
    grunts. As you're being dragged along the way, the two guards debate
    whether or not you can be reported for questioning. Since you killed most
    of their buddies, and they despise you, they decide to get "rid of" the
    body.*

You will now awake in a small caged room. After a short amount of time, the
walls will start to press in on you! Quickly leap on the boxes, and use them
as boosts to reach the above area. Crouch on the side, and wait for the
machine to stop compressing. Look for a crowbar on this tall ledge, and grab
it. Then, jump down to the side of the compressor where there is a vent on the
ground. Smash the vent cover, and drop into the pipe. You will be brought to
the next area.

 _________________________
/Residue Processing (4.9)/
-=-=-=-=-=-=-=-=-=-=-=-=-=-=

The pipe you just leaped into will now flush you out into a canyon with some
water below. After landing, go right. A few headcrabs will spawn along the
way. Go next to the tall water tower, and look for a valve. Hold down the use
key to rotate the valve all the way. Once it's rotated all the way, quickly
climb the tower, and drop into the lowering elevator. Once you reach the
bottom crawl in the little shaft to the left. Break the cover and crawl
through. Break the other end of the shaft to reach the interior section.

   *A security guard will be shooting some headcrabs in the distance. After he
    notices you, he'll run down the hole. If you look ahead, he actually ran
    right into a rope eater, and got eaten up. Poor person.*

After the guard is dead, pick up his dropped pistol. Now you're armed to the
teeth - not quite. Go recharge your health, and move ahead. You'll now be in
an Observation Area. Go down the spiral stairs and kill the two headcrabs at
the bottom. Since there's a high amount of radiation in this area, charge up
your suit via the nearby boosters. Now, go back to the room where you first
met the security guard. Climb the ladder on the pool of toxic radiation. Leap
over, and crawl through the vent. In the next room, you have to time your
jumps so you can make it to the red room across from you. Just wait for the
opportune moment, and try to leap on the middle two when they're both moving
at the same rate. In the red room, move along the left pipe, and then leap
across to the right pipe. If you try walking directly across the right pipe,
it will shatter due to the weight, and you will have to do the process all
over again. In the next location, you have to make it across the radiation
pool via the rotating swirls in the vat. As usual, time your movement directly
across when the rotators are lined up.

Crawl in the vent to the upcoming area. Now, jump onto the middle conveyor
belt. It should bring you to a giant pool of water. Swim down and head back
towards the direction you came from. Swim down the channel of underground
bubble water, and avoid the chopper. Move ahead, and crouch swim under the
churner. Catch a breath in the new 3-conveyor belt room. Move around and check
out the room behind you. Kill the alien, and take the Revolver from the
ground. Now, head back, and go right of the conveyor belts to the Maintenance
section. Hit the middle lever to cause that belt to go forward now. Move to
the back room, and hit the button control to stop the stompers. Quickly run
out, and leap onto the middle belt. Make sure you timed pressing the button so
both stompers are high enough so that you may crawl under them. The next room
will have side squishers. Time your sprints past them to not take any damage.
There will be 3 more patterned vertical squishers up ahead.

In the next large room, drop onto the first right conveyor belt you encounter.
Drop onto the next one, and the one after that. You will know you're on the
right track when you past through a section of hot flames. Follow this belt
until you can see 2 conveyor belts to your left (leading into a wall). Jump
down on the first one, and shoot the mine to not take any damage. Shoot the
other mine around the corner. Up ahead will be 3 rollers positioned at various
lengths. Diagonal leap across both belts to get past them. You'll now be in a
large squisher room. Jump to the side to avoid being crunched by the central
chopper. Time your jump down as it retracts. Now that you're in the toxic
area, leap up and climb the ladder. Once you're in the red hall, we've reached
a new section.

 ___________________________
/Questionable Ethics (4.10)/
-=-=-=-=-=-=-=-=-=-=-=-=-=-=

Climb up the ladder, and you'll be greeted by a herd of shocker creatures.
Quickly drop a satchel on the foreground, then climb down the ladder, and
detonate that sucker to eliminate most of the threats. Make your way back off,
and finish off the remaining threats. Shoot the electric bulb to open the gate
to continue forth (it probably blew up from the explosion of the satchel).
Recharge your health, then go through the lab doors. There will be a creature
in the central tube. Look on the nearby console, and smash the alarm button.
At the same time, the creature will burst out of its tube. Run down the newly
opened door to escape the clutches of the fiendish beast. In the next room, go
into the corner shack, and hit the button. All of the headcrabs in the center
cage will be incinerated by a blinding ray. Remember this for later on. Move
ahead, and kill the lone soldier around the corner. The MP5 will help you
against the upcoming threats. You'll also meet up with a security guard along
the way.

   *He will inform you that the military has the exitway sealed off. The only
    way out is to find a scientist who has retinal access, and to get him to
    open the door for you. Now if only you could find a scientist in these
    cursed labs.*

Have the newly found guard follow you. Kill the 3 guards in the next room, and
make sure you pick up their ammo. Recharge your suit, then enter the upper
door looking for scientists. In the next room, hit the button on the left to
release the crabs. Then, run to the corner shack, and hit the button to
incinerate the beasts. Finish off the remaining threats, then pick up the
crossbow where the crabs were, along with additional ammo. Move ahead. You
will find 2 soldiers around the corner. Go left to open access forward, then
move right. In the new room, watch for the trip mines in the lower right
portion. Grab the power unit near the middle, then go left and up the hall to
the red control room. Shoot the trip mines to trigger an alarm. Several alien
beasts and marines will clash and collide in battle. Let them eliminate each
other. Along the way, you should have found a few trip mines. Go back down
this hall, and plant the mines bunched together. One of the remaining aliens
will try to sneak up behind you, but the mines will make quick work of him.

Once the area is clear, go in the newly opened door thanks to the alert. There
will be a soldier to your left around the corner. Go past the first locked
door to your left. Go down the hall and run past the glass labs. Headcrabs
will lunge out of them in an attempt to ambush you. Go left up the stairs.
There will be more aliens and soldiers duking it out in traditional battle. Go
into the first room to your right, and hit the button to start the laser.
Leave this room, then enter the first hall to your left.

   *You will overhear a conversation between a scientist and security guard.
    Apparently he found a new prototype weapon (the Gauss Cannon). The
    scientist warns him not to overcharge the weapon, but the guard didn't
    know, and both of them are killed.*

Enter the room, and pick up the tasty weapon. Also, hit the button to enable
the laser. Go back to the main hall, and proceed to the far end. Go into the
upper left hall, eliminating the soldiers along the way. Inside the room,
clear out the shockwave creatures, and turn on the laser. Go back to the hall,
enter the room across from it, and turn on the last laser. Now, head to the
room about halfway down the main hall. Inside you'll find two lasers coming
down. Look for a gray box in the room, and push it against the wall, where the
two glass windows are. Make sure it's within contact of the wall. Walk over to
the command console, and press the use button to start the powerful laser. A
powerful red beams will be formed thanks to the turning on of the other laser
consoles. Because of the box's positioning, a special metal protective layer
won't retract, and the laser will blast through the soft wall. Jump down into
the room, and go through the chamber door up ahead.

   *A scientist in the room will inform you that they all have retinal access
    to get past the main door. However, a surgical unit got tossed out of
    control, and is spinning harmfully, preventing them from reaching the main
    lobby.*

The spinning device is fairly simple to avoid. Just strafe and jump over the
lower one to get past it, then hit the button on the console near the other
side to turn it off. Once it's off, have one of the scientists follow you.
Lead him out to one of the far ends, and run through the double lab doors.
Watch for a spawning marine to your right. After he's dead, lead the scientist
to the main door, and he'll open it up for you. The man has some kind words
for you as well.

   *The military has an extreme lockdown on the entire exterior of the base.
    You would be crazy to go out there and attempt to reach the Lambda Labs
    unless you had a fully trained batallion. You can find the labs on the
    opposite side of the base, where most, if not the rest of the science team
    is hiding. Get there, and perhaps they can figure out a solution to this
    eery mess.*

Go through the spinning door. Outside you'll find one marine to your right.
There's a turret above as well, but you can usually sprint away from it
without taking too much damage. Blow the explosives blocking the tunnel to
move ahead. Destroy the boxes in the tunnel for ammunition and health.
Approach the door, and prepare for the toughest level.

 Kevin Johnston's Blog - http://www.300bucks.ca